One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(7,8)(9,10,13,11)(12,15,16,14)(17,18,22,24)(19,21,26,23)(20,28,30,25)(27,29,32,31)(1,2,5,6)(3,7,4,8)(17,19,22,26)(18,23,24,21)(20,27,30,32)(25,29,28,31)(10,11)(14,15)(18,24)(19,26)(25,28)(27,32) involution — undirected(9,11,13,10)(12,15,16,14)(17,18)(19,23)(20,25)(21,26)(22,24)(27,29)(28,30)(31,32)(1,3,5,4)(2,7,6,8)(9,12,13,16)(10,14,11,15)(17,20)(18,25)(19,27)(21,31)(22,30)(23,29)(24,28)(26,32)(1,4,5,3)(2,8,6,7)(17,21,22,23)(18,26,24,19)(20,29,30,31)(25,27,28,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.